Pipe fitting for a heatable piping of a SCR system
AssigneeDayco Fluid Technologies S.p.A.
InventorsFranco Colosimo, Mario Zasa, Simone Cavanna
Life of this patent
Estimating the term…
Abstract
A pipe fitting for a heatable piping of a SCR (“Selective Catalytic Reduction”) system presents a body defining a hydraulic connection to make flow an urea solution from/to such piping; the pipe fitting further presenting an electrical connection, which is provided with a first terminal connectable to an electrical power supply, and with a second terminal connectable to a heating element of the piping (9); the electrical connection being also provided with an electrical resistor embedded in the body of the pipe fitting, whose material is a polymeric base and is thermally conductive to heat up the urea solution when the electrical resistor is powered.
Claims10
In a selective catalytic reduction system including a heatable piping and a pipe fitting, comprising:
- a body made of a polymeric base material and defining a hydraulic connection to make a urea solution flow from/to said piping;
- wherein said polymeric base material comprises electrical fillers added before forming so as to make the body thermally conductive, and comprises electrical connection means carried by said body including:
- a first terminal electrically connected to an electrical power supply circuit, an electrical heating element embedded in said body and electrically connected to said first terminal, and a second terminal electrically connected to said first terminal, and electrically connectable to a further electrical heating element of said piping;
- and wherein said polymeric base material is polyamide PA12, and said electrical heating element is comoulded in the pipe fitting;
- and
- said electrical heating element comprises a core defining an electrical resistor, and
- an electrical insulation sheath between said core and said polymeric base material.
Dependencies are inferred from the claim text.